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Image forming apparatus and power-transmission assembly of the same

a technology of power transmission and forming apparatus, which is applied in the direction of electrographic process apparatus, instruments, optics, etc., can solve the problem of negative effect of coupling durability

Active Publication Date: 2014-10-07
HEWLETT PACKARD DEV CO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention includes a chamfer in the cylindrical portion to help the driven coupling unit smoothly fit into it.

Problems solved by technology

However, in the above-described configuration, if the driving coupling and driven coupling are dislocated, power-transmission from the driving coupling to the driven coupling may be problematic to cause a negative effect on durability of the couplings.

Method used

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  • Image forming apparatus and power-transmission assembly of the same
  • Image forming apparatus and power-transmission assembly of the same
  • Image forming apparatus and power-transmission assembly of the same

Examples

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Embodiment Construction

[0043]Reference will now be made in detail to the embodiments of the present general inventive concept, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present general inventive concept while referring to the figures.

[0044]FIG. 1 is a view schematically illustrating an image forming apparatus 1 according to an embodiment of the present general inventive concept.

[0045]As illustrated in FIG. 1, the image forming apparatus 1 includes a main body 10, a printing media feeding unit 20, a light scanning unit 30, a developing cartridge 40, a transfer unit 50, a fixing unit 60, and a printing media discharge unit 70.

[0046]The main body 10 defines an external appearance of the image forming apparatus 1 and supports a variety of elements received therein. A main body cover 11 is pivotally rotatably coupled to one side of the main body 10. The main b...

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PUM

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Abstract

An image forming apparatus having an improved power-transmission assembly to drive a developing cartridge mounted in a main body of the apparatus. The apparatus includes a main body, at least one driving coupling unit rotatably located in a side region of the main body, at least one driven coupling unit connected to a rotator inside a developing cartridge, and a coupling holder in which the driving and driven coupling units are connected to each other to enable a power-transmission from the driving coupling unit to the driven coupling unit. The driving coupling unit includes a first spherical portion to come into contact with one side of an inner surface of the coupling holder when received in the coupling holder. The driven coupling unit includes a second spherical portion to come into contact with the other side of the inner surface of the coupling holder when received in the coupling holder.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority under 35 U.S.C. §119 from Korean Patent Application No. 2011-0121147, filed on Nov. 18, 2011 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]Embodiments of the present general inventive concept relate to an image forming apparatus having a power-transmission assembly including couplings, and the power-transmission assembly of the image forming apparatus.[0004]2. Description of the Related Art[0005]Generally, image forming apparatuses are devised to form an image on a printing medium according to input signals. Examples of image forming apparatuses include printers, copiers, fax machines, and devices combining functions thereof.[0006]One type of image forming apparatuses is an electro-photographic image forming apparatus that includes a developing cartridge in which a photo...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G03G15/00G03G21/18
CPCG03G15/5008G03G21/186G03G15/00
Inventor JUNG, TAE ILSONG, MIN KEUN
Owner HEWLETT PACKARD DEV CO LP
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